首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
We recently sailed with our research ship through the Red Sea to the Indian Ocean where we did research work for about a year. O
We recently sailed with our research ship through the Red Sea to the Indian Ocean where we did research work for about a year. O
admin
2011-01-23
92
问题
We recently sailed with our research ship through the Red Sea to the Indian Ocean where we did research work for about a year. Our main objectives (目标) were the little-known Maldive Islands. The Maldives consist of several thousand little islands, some so small that they are hardly a mile in diameter, some as large as twenty or thirty miles across. All the islands in the Maldives have developed on coral reefs (珊瑚礁).
A coral reef is a flower garden of stone, growing like a wall or like a tower from the depths, and filled with the most confusing and most colourful varieties of life. The colours are very beautiful, especially in the shallow region down to sixty feet, where some of the red and yellow light of the sun’s rays still penetrates. But most corals are greenish, brown, bluish or yellow. Coral reefs offer shelter and food to thousands of creatures. The warmer the climate, the greater the variety of species there is. In the tropics, it is easier to find, in one place, ten different species than ten specimens of the same species, and a coral reef provides ample proof of that rule. Living conditions are most favourable so that many forms are able to develop and survive in their struggle for existence. Here is wide field for the diving biologist.
The value of aqualung (水中呼吸器) diving for the biologist is that he can watch and collect on the spot. If men have not until recently ventured diving in the tropical seas, this has been mainly because of sharks. In the last twenty years I have encountered most of the really dangerous varieties of shark. There is always a certain risk, but, in general, sharks are much less dangerous than people think. You must not show fear or swim quickly away when they come into view. This attracts them, just as a cat is attracted by something on a string. Keep quiet, and, if the shark really heads towards you, then you can scare him off by swimming towards him yourself.
The colours of a coral reef are most beautiful ______ .
选项
A、near the bottom of the sea
B、above the water level
C、within twenty meters under the water level
D、below twenty meters from the water level
答案
C
解析
参看该句“The colours are very beautiful,especially in the shallow region down to sixty feet”。
转载请注明原文地址:https://kaotiyun.com/show/Ed3d777K
本试题收录于:
公共英语三级笔试题库公共英语(PETS)分类
0
公共英语三级笔试
公共英语(PETS)
相关试题推荐
Computersarenowbeingpushedintoschools.Weknowthatmultimediawillmake【C1】______easyandfun.Childrenwillhappilylear
Whatistheconversationmainlyabout?
Youmaysaythatthebusinessofmarkingbooksisgoingtoslowdownyourreading.Itprobablywill.That’soneofthe【B1】_____
What’sanewbornbaby’sreactiontoaloudnoisenearhim?
Whatistheconversationmainlyabout?
Accordingtothespeaker,whatshouldthelistenersdoassoonaspossible?
Lowerthanbefore.
ItisreportedthattheFrenchcultureminister,FleurPellerin,hadnotreadanyofNobelprizewinnerPatrickModiano’snovels
ItisreportedthattheFrenchcultureminister,FleurPellerin,hadnotreadanyofNobelprizewinnerPatrickModiano’snovels
随机试题
在Excel2010中,________是附加在单元格中,根据实际需要对单元格中的数据添加的注释。
A.颅内占位性病变B.中枢神经系统感染C.以头痛为主要表现的癫痫D.蛛网膜下腔出血E.偏头痛反复发作搏动性头痛,可有视觉障碍和胃肠道症状,无神经系统异常体征,可诊断为
治疗肾虚型胎漏、胎动不安的主方是治疗外伤型胎动不安的主方是
进出口属于禁止进出口的技术的,或者未经许可擅自进出口属于限制进出口的技术的,依照有关法律、行政法规的规定处理、处罚;法律、行政法规没有规定的,由国务院对外贸易主管部门责令改正,没收违法所得,并处违法所得______倍以上______借以下罚款。(
市场机制作用得到充分发挥的前提是()。
Organisedvolunteeringandworkexperiencehaslongbeenavitalcompaniontouniversitydegreecourses.Usuallyitisleftto【C
窗体上有一个名为List1的列表框和一个名为Command1的命令按钮,并有下面的事件过程:PrivateSubCommand1_Click()n%=List1.ListlndexIfn>0Then
Lookatthepassagebelow.Someinformationismissing.Youwillhearawomantalkingaboutanewproductrange.Foreachquesti
FoodanddrinkplayamajorroleinChristmascelebrationsinmostcountries,butinfewmoresothaninMexico.Manyfamiliesov
There’snoquestionthattheEarthisgettinghotter.Therealquestionsare:Howmuchofthewarmingisourfault,andarewe【S
最新回复
(
0
)